Portion of a shoe sole



FIG. 1 is a frontal perspective view of a portion of a shoe sole showing my new design;

FIG. 2 is a rear perspective view of the portion of a shoe sole shown in FIG. 1;

FIG. 3 is a side elevational view of the portion of a shoe sole shown in FIG. 1; and,

FIG. 4 is a top plan view of the portion of a shoe sole shown in FIG. 1.

The broken line showing of the remainder of the shoe is for illustration purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a shoe sole, as shown and described. 